Heat shield isolation type ultrahigh-temperature vacuum sintering furnace

Abstract

A heat shield isolation type ultrahigh-temperature vacuum sintering furnace comprises a furnace barrel and further comprises a heater, heat shields, a cooling piece and an isolation piece which are arranged in the furnace barrel. The heater, the heat shields and the cooling piece are sequentially arranged from interior to exterior. The isolation piece is arranged between the outermost-layer heat shield and the cooling piece, and direct contact between the heat shield and the cooling piece is avoided. The isolation piece comprises a plurality of frames and a plurality of transition connecting rods, the frames are long and thin rib plates, and the multiple rib plates are vertically arranged on the surface of the outermost-layer heat shield at intervals. The multiple first transition connecting rods penetrate through the frame and do not make contact with the heat shield, the first transition connecting rods are detachably connected with the heat shield, the cooling piece covers the positions above the multiple frames, and the cooling piece is detachably connected with the frames. In the heat shield isolation type ultrahigh-temperature vacuum sintering furnace, the heat shields and the cooling piece are isolated through the isolation piece, direct face-to-face contact of the heat shields and the cooling piece is avoided, accordingly, direct contact between the heat shields and thecooling piece is reduced, and the functions of isolation and fixed connection are achieved.

Description

technical field [0001] The invention relates to the technical field of high-temperature vacuum sintering furnaces, in particular to a heat shield-isolated ultra-high-temperature vacuum sintering furnace. Background technique [0002] In the industry, sintering furnaces are divided into high-temperature vacuum sintering furnaces and ultra-high-temperature vacuum sintering furnaces. Usually, the sintering temperature reaches 1000°C, which is a high-temperature vacuum sintering furnace, and when it reaches 1900°C, it is an ultra-high-temperature vacuum sintering furnace. The sintering furnace in this patent It can reach a temperature of 2600°C, which is an excellent ultra-high temperature vacuum sintering furnace. [0003] In the existing furnace type, the cooling part is in direct contact with the heat shield, which causes the cooling part to bear high heat transferred by contact, and the cooling part is severely heated. Contents of the invention [0004] It is necessary to...

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